Rafter and polygon bevel.



PATENTED AUG. 8. 1905.

F. QUISENBBRR'Y. RAFTER AND POLYGON BBVEL. APPLICATION FILED MAR. 10, 1905..

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I. QUISBNBERRY. RAPTER AND POLYGON BEVEL.

LPPLIOATIOH FILED MAR. 10, 1905.

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l/vitneowa ANDREW. s. GRAHAM co. PHOYOMYMOGRAVHERS. wAsmcmN, DV 4:.

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Aug. 8, 1905.

Application filed MSJ'Gll 10, 1905' Serial N0. 249,507-

T 0 all whom, it may concern:

Be it known that I, FRED QuIsENBnRRY, a citizen of the United States, residing at Santa Fe, in the county of Monroe and State of Missouri, have invented certain new and useful Improvements in Rafter and Polygon Bevels; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to a rafter and polygon bevel, and particularly to a tool embodying the proper graduations for securing the desired angle in cutting roof-timbers or other polygonal figures.

The invention has for an object to provide a segmental dial having a tongue upon which a handle is pivotally mounted to traverse the arc of the dial.

A further object of the invention is to provide the opposite sides of this dial with different characters of graduation with which the handle portion cooperates, so as to extend the use of the bevel to a greater number of inclinations.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawings, Figure 1 is a plan of the bevel. Fig. 2 is an enlarged plan of one side thereof containing the graduations for cutting rafters. Fig. 3 is a similar view of the opposite side containing graduations for polygonal figures or cuts used in building and also other dimensions, such as the degrees in the arc of a circle; and Fig. 4 is a vertical section upon the line 4 4 of Fig. 1.

Like letters of reference refer to like parts in the several figres of the drawings.

The letter V designates the dial of the bevel, which is.provided with a suitable segmental slot Z, extending concentric to the arc of the dial. From one end of this dial a tongue X extends and is provided at its upper portion with a pivoting lug X, while from the opposite end of the dial an arm X extends tothis lug. The handle Y is pivoted at X and is bifurcated at its lower end Y, so as to extend upon opposite'faces of the dial to provide an edge to cooperate with the graduations of the dial. For the purpose of retaining this handle in any of its adjusted positions a thumbscrew Y is applied and adapted to engage a nut Y carried by the handle, as shown in Fig. 4.

This tool is particularly adapted for cutting rafters, and one face of the dial, as shown in Fig. 2, is provided with a series of different graduations for this purpose. For instance, the graduations upon the arc A are adapted to give the pitch, length, and bottom cuts for common rafters from one to eighteen inches rise per foot run, the rise number appearin g above the horizontal line. The grad uated arc B is for determining plumb-cuts for common rafters, while the letter 0 indicates the graduations to determine the pitch, length, and bottom cuts of hip or valley rafters from one to eighteen inches rise per foot run. The letter D indicates the graduations for securing the plumb-cuts for these latter rafters. The letter E indicates the segment containing graduations for the side cuts of hip and valley rafters for contact against the ridge board or deck, While the graduations in the segment F are for the purpose of securing the side cuts for jack-rafters intended to contact against hip or valley rafters. It will thus be seen that the graduations indicated in Fig. 2 are particularly intended and adapted for laying off and plotting the roof-rafters to be cut in building a roof structure. The opposite face of the dial, as shown in Fig. 3, contains in the segment G graduations giving the side cuts of jack-rafters intended to rest against octagon hip-rafters, while the graduations H are for the purpose of securing the side cuts of these octagon hip-rafters. I designates the graduations for securing the plumb-cuts for octagon hip-rafters, while in the segment J grad uations are given for securing the pitch, length, and bottom cuts of octagon hip-rafters from one to eighteen inches rise per running foot. In the segment K different graduations are given for the purpose of obtaining the various polygonal angles desired in framing or building work and reading from left to right are indicated as follows: W D gives pitch of window or door sills. S P provides the bevel to form a side of a pentagon. S H is the bevel to form the side of a hexagon. S H T G gives bevel to form side of heptagon, while S O indicates the bevel of side of octagon. S N gives bevel to form side of nonagon, while S D forms side of decagon and S U forms side of undecagon. S D D provides side of dodecagon, and

:M P gives miter cut for pentagon, and M I-I1s thesame forahexagon. MI-ITG gives miter fora heptagon and M O miter for an octagon, and M N the same for a n onagon M D gives miter for a decagon,

M U for an undecagon, and M D D is miter for a dodecagon. The space L is provided with a series of graduations indicating the degrees from one to ninety in the segment v of a circle.

In the operation of this tool the proper bevel or cut may be indicated for any roof having a rise from one to eighteen inches per running foot. For instance, if the roof is of a pitch of ten inches rise to a foot reference to the graduations gives the length of both common and hip and valley rafters, the length of which can be very easily found by using the present invention by multiplying one-half the length of the building by the figures under the line indicating the desired pitch. For instance, taking a building eighteen feet wide, it is desired to find the length and cut of all the different rafters pertaining to the roof, which is to have a pitch of eight inches rise to the foot. Referring to Fig. 2, we find in the spaceA on the face of the bevel the pitch, length, and bottom cuts of any desired common rafter with any pitch roof from one to eighteen inches rise to the foot. In this example the pitch is eight inches, and the handle is moved until the side thereof next the tongue X is brought into alinement with the line marked 8 B. At this point the handle is fastened with the thumb-screw, thus giving the bottom out of a common rafter, while under this line the length of the common or jack rafter per foot run is given, which in the present instance is 14.42 inches, the run in this building being nine feet, which is one-half the width of the building. It will be seen that HA2 inches multiplied by nine give ten feet nine inches, the length of a common rafter. In the space B the line marked 8" R will be the proper plumb-cut for the same rafter, thus completing the rafter. The hip or valley rafter cuts are determined in the same manner, using the proper spaces C, D, and E. The jack-rafter is next indicated, and the proper graduations for the bottom and plumb cuts have been already ascertained, so that the side thus continued as usual in completing the framing of the roof. When the roof is to be octagon-hipped, we find the proper length I and cuts on the lines marked for tbe desired pitch in spaces marked Gr 1-1 I J, and the procedure is the same as that just given for a common rafter. In the space K the proper pitch for a window or door sill is given, and the remaining indications in this space give the bevels for the side of poly,, onal figures and also the miter cuts for such figures.

It will be obvious that changes may be made in the system of graduations herein used, although those shown are most desirable, and aiso that the details of construction and configuration may be varied without departing from the spirit of the invention as defined in the appended claims.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a bevel, a segmental dial with a slot therein, a pivot-pin at the apex of said dial, a handle made up of two sections and pivoted on said pin, one section on each side of said dial, a shouldered screw carried by said handle-sections, and guided in said slot, apertured plates secured one to the outer face of each of said handle-sections, one of said plates having an inwardly projecting lug adapted to bear against the face of said dial, a nut on said screw adapted to cooperate with the latter to hold the dial in an adjusted position, as set forth.

In testimony whereof I hereunto affix my signature in presence of two witnesses.

FRED QUISENBERRY.

W'itnesses:

BERT CRIGLER, N. A. BULL. 

